This Dangerous Music SUM & MINUS was brand new and used for display for three days at the NAMM Show 2026 by the manufacturer. It comes with a full factory warranty, our extended warranty, and all factory packaging and paperwork.

Dangerous Music SUM & MINUS

The Dangerous Music SUM & MINUS is a precision analog mid-side (sum and difference) processor designed to give mixing and mastering engineers complete control over stereo information. By converting any stereo signal into independent Mid (Sum) and Side (Difference) components, the S&M opens the door to processing techniques that are impossible with traditional left-right workflows.

Insert your favorite analog outboard, split the stereo field into center and sides, and sculpt with intent. Enhance air and width without touching the vocal, de-ess aggressive cymbals without dulling the mix, or rein in an overbearing snare from a stereo overhead pair in seconds. Whether used subtly or pushed creatively, the SUM & MINUS is a powerful problem-solving and sound-shaping tool for modern hybrid workflows.

Mid-Side Control Without Compromise

The SUM & MINUS separates any stereo signal into its Mid and Side components with extreme accuracy, allowing each to be processed independently and then recombined with perfect phase coherence. This makes it invaluable in mastering scenarios where remixing isn’t an option, enabling precise control over vocal levels, stereo width, and spatial balance while preserving the integrity of the original mix.

For mixing engineers, the S&M becomes an extension of creativity. Extract focus from a dense stereo source, widen narrow elements without artificial processing, or aggressively control the center while leaving the sides open and dimensional. All of this is achieved with a fully analog signal path—no DSP, no latency, and no sonic compromise.

Built for Hybrid Mixing and Mastering Rigs

Designed to integrate seamlessly into analog and hybrid studios, the SUM & MINUS features dedicated insert loops for external processing, ultra-clean headroom, and repeatable controls suited for recall-based workflows. From stereo bus shaping to creative effects routing and surround widening applications, it remains one of the most flexible mid-side processors available.

Hand-assembled using premium components and Dangerous Music’s no-compromise design philosophy, the SUM & MINUS delivers exceptional transparency, precision, and reliability—making it a staple in serious mix and mastering rooms worldwide.

Key Features

• Analog sum and difference (mid-side) processing matrix
• Independent processing of center (Mid) and sides (Difference)
• Powerful stereo width control
• Dedicated insert loop for analog outboard processing
• 100% analog signal path
• Extremely clean and quiet operation
• Repeatable, recall-friendly controls
• Ideal for mixing, mastering, and creative sound design

Technical Specifications

• Frequency Response: Flat within 0.1 dB from 1 Hz – 100 kHz
• THD + Noise: < 0.002%
• IMD60 (4:1): < 0.002%
• Sum and Minus Channel Separation: -78 dB
• Width Control Accuracy: 0.02 dBu
• Dynamic Range: 108 dB
• Nominal Operating Level: +4 dBu
• Maximum Input Level: +23 dBu
• Input Impedance: 25k Ohms balanced
• Output Impedance: 50 Ohms balanced
• Power Requirements (Americas): 90–120 VAC, 2A Slo-Blo fuse
• Power Requirements (Europe): 200–260 VAC, 1A Slo-Blo fuse